464 results about "Topological information" patented technology

A network operating system NOS for an agile optical network with a plurality of mesh interconnected switching nodes, manages the network using an object-oriented network information model. The model is common to all applications requiring the data stored in the network managed information base. The core model can be expanded for serving specific application areas. The NOS is organized in layers, at the optical module level, connection level and network level. A distributed topology server DTS organizes the physical, logical and topological data defining all network entities as managed objects MO and topology objects TO for constructing a complete network view. The network information model associates a network element NE information model, specified by managed objects MO and a topological information model, specified by topology objects TO. The MOs are abstract specific NE data that define network implementation details and do not include any topological data, while the TOs abstract specific topological data for defining a trail established within the network, and do not include any NE data. The models are associated in a minimal number of points to construct the model of a trial in response to a connection request.

A method implemented by a network controller, comprising receiving an address filter from a service chain orchestrator, wherein the address filter comprises a plurality of service instance (SI) addresses associated with a plurality of SIs in a network, obtaining network topology information from a plurality of service function (SF) forwarders controlled by the network controller, wherein the network topology information indicates a plurality of network devices communicatively coupled to the plurality of controlled SF forwarders, and wherein at least some of the network devices are SI hosting devices, and generating a service chain topology map by building mappings between at least some of the plurality of controlled SF forwarders, the SI hosting devices, and the plurality of SIs according to the network topology information and the address filter.

The invention discloses a POI simplifying parallel computing method based on road mesh hierarchical structure division in order to improve efficiency of POI simplifying computing. A road hierarchical structure and a mesh initial zone are constructed first, the mesh zone is divided in sequence according to the grade of a road, a road mesh hierarchical structure is established, on the basis, road meshes are used for dividing a POI space, a large number of POI are divided into the road meshes, complexity of problem solving is lowered, according to the number of computed nodes and the hierarchical structure of the road meshes, POI data are divided, the data are distributed on the computed nodes, and then the POI are simplified in a parallel mode. According to the method, the road meshes are used for dividing the POI data, influence on the POI from a road net is considered in a data dividing process of the POI, and thematic information and topological information of the simplified POI can be well maintained.

The present invention provides a method and a device for establishing cross-domain paths. The method comprises: a transmission network controller set in a first network receives a request for establishing a cross-domain path, and the cross-domain path request comprises first and last node information and bandwidth information of the target path; based on the topological information of the first network and the TE information, a first sub-path of the target path in the first network is received; network resources are allocated for links among the nodes on the first sub-path to allow all the nodes to be in the connection, according to the bandwidth information; path messages are transmitted to second boundary nodes of a second network to allow the second boundary nodes to build a second sub-path of the target path within the second network, based on signaling protocols in a path message GMPLS operating protocol stack, and connection among the nodes of the second sub-path is achieved; and after the network resources in correspondence to inter-links transmitted by the second boundary nodes is received, an indication message is sent to the first boundary node to allow the first boundary nodes to be connected with the first sub-path and the second sub-path.

This invention relates to a data distribution and getting method based on network information, in which, said method includes: a resource getting node sends a request for getting resources to a resource index server, which searches for it in a resource state library to look for addresses of all resource peer points capable of providing said specific resources currently and feeds back a neighbor list to the resource getting node based on the neighbornhood principle, the getting node sends an obtaining request to the peer points on the list based on the addresses provided by the neighbor list and receives or uses resources, which fully utilizes a physical network topological information to get the lastest neighbor list and reduces multiple data paths resulted in using overlay network in the physical network.

A mobile device of a user discovers topological information about electronic devices in a premise environment, and shares such information with a media gateway. The media gateway uses the topological information to augment content from a server, such as a web page that supports access to media content, to add graphical objects corresponding to those electronic devices in proximity to the mobile device that are capable of reproducing the streaming media content. Selection of the one of the add-on graphical objects causes delivery of the media content to the corresponding electronic device instead of the display of the mobile device. In this manner, a more natural selection mechanism than that available using conventional pull-down lists of options is provided.

The invention relates to an LED display screen matching method, which is suitable for not only software screen matching but also hardware screen matching. User input and intelligent acquisition from hardware are combined and cooperate for finishing acquisition of topological information of an LED display screen, so that information input quantity of a user can be reduced and the user only needs to provide simple information of row and column numbers of case bodies, a routing mode and the like of the LED display screen; and actual loaded information of a receiving card corresponding to each case body is acquired by accessing to the hardware, so that the user requirements are lowered.

The invention relates to the communication technique, which provides a topological information acquisition method and a network device of tree-shaped network, and avoids network topology and the limitation of VLAN or three-layer network equipment in the process of discovering. The method comprises using a topological collecting device as a start node, downwards discovering layer by layer through sending out topological request messages to a lower link interface, and then sending out topological information response messages to an upper link, contracting topology layer by layer, since topological information response messages and topological refresh messages received by each network equipment are from the lower link equipment, the topological information refresh messages can not be limited by the VLAN or the three-layer network equipment in the network through the layer by layer delivery, and the messages are finally sent to the topological collecting device, and topological acquisition work is finished when topology is found. Furthermore, when topology of network is changed, the topological collecting device can timely and reliably refresh topological information of integral network, and keeps the synchronization of network topology and an actual network structure.

The present invention provides a rout monitoring apparatus which mostly includes: data acquisition module for collecting network rout information, and transmitting collected network rout information to data storage module; data storage module for generating topological information, network affair according to rout information from data acquisition module; storing the rout information, topological information, network affair; data-processing module for executing analyze and process storage data of data storage module, monitoring routing action of network, obtaining routing action data information of network, judging node and circuit of network fault; interface display module for displaying obtained network fault node and circuit information of data-processing module through interface. Using the invention can judge defective node and circuit accurately, and execute effectually monitoring to fault of wireless communication network.

A fault location method in communication network includes: setting up a network topological information library, receiving fault alarm signals from said network, processing alarm signals passing through a single side disk layer and its NE layer based on the coherence among the fault alarm signals of layers, among which, the fault alarm signal processed on said single side disk layer is reported to its NE layer and the signals processed on the NE layer are reported to the communication network belonging to the NE layer as character fault alarm information, the location unit carries out fault location in terms of the given rule and based on the received character fault alarm information filtered by the NE.

A method for identifying video network problems for digital cable and IPTV (Internet Protocol Television) service providers based on real-time on-line video quality monitoring by customers. A video quality problem reporting button is provided on each customer's set-top box and/or on a remote control unit therefor, which is used by the customer to report a video quality degradation problem to the service provider. Based on an aggregation of video quality problem reports by a plurality of customers, and based on geographical and topological information regarding these customers in connection with knowledge of the network topology, a network management system of the service provider advantageously identifies, locates, and potentially diagnoses a network problem.

The embodiment of the invention relates to a method for obtaining a target transmission path and a network node thereof. The method comprises the steps that the first network node in a network domain obtains topological information of multiple network nodes in each path between an entry node and an exit node in the network domain; the first network node obtains the transmission delay of each path according to the topological information, and the transmission delay of each path includes the sum of the physical link delay between all the network nodes in each path and node residence time of all the network nodes; and the first network node determines the target transmission path according to the transmission delay of each path. According to the method for obtaining the target transmission path and the network node thereof, transmission of low delay business in the network is ensured to meet the delay requirements, and multiple low delay paths between the entry node and the exit node in the network can be more fully utilized so as to enhance the transmission reliability of the low delay business.

The invention discloses a heterogeneous network interactive visualization method. The method comprises the steps that (1) nodes in a heterogeneous network are clustered according to node attribute values, and a corresponding clustering network visualization map is generated; (2) as for each node in selected clustering results, a neighbor node set of the node is calculated; then according to the node attribute values of the adjacent node sets, the nodes in the clustering results are clustered; a clustering visualization map is generated as a next-level visualization map; (3) the clustering results obtained in the step (2) are selected, the nodes in the clustering results are clustered according to the adjacent node sets of the nodes, and the nodes with the same adjacent node set fall into the same cluster; then the clustering results are used for generating a clustering visualization map which is used as a next-level visualization map of the clustering network visualization map generated in the step (2). According to the heterogeneous network interactive visualization method, topological information and attribute information are combined, and a user can check the lower level with the finer granularity.

The invention discloses a fast handover protocol flow for heterogeneous wireless networks. The main implementation process of the flow is characterized in that a mobile terminal periodically sends the mobile terminal related information reports to a wireless access network; a network-side wireless access network reconfiguration manager predicts the motion tract of a user; when the mobile terminal needs to initiate handover to maintain the business continuity, the predicted motion information and the network topological information are combined to determine the aggregate of network candidates; a target network for the mobile terminal is selected in advance by the wireless access network reconfiguration manager of the present network and simultaneously the target network is informed to reserve resources required for the mobile terminal; the mobile terminal monitors the received signal intensities of the present network and the target network an determines the optimum handover trigger time; and after triggering handover, the mobile terminal accesses to the target network firstly and then releases the original link resources. The fast handover protocol flow can reduce the handover delay of handover among the heterogeneous wireless networks, increase the success rate of handover and ensure the quality and continuity of business services.

A method is provided for detecting islanding conditions in an electric power network which includes a plurality of sub-networks. The sub-networks include at least one power electrical unit and are separable from each other and a main grid supplying the network by switching devices. The method includes determining topological information of at least one sub-network of interest, detecting islanding conditions in at least one sub-network of interest on the basis of the topological information by using separate detecting devices for each sub-network of interest, and sending, on the basis of the islanding conditions detected by using the detecting devices, a disconnect signal to at least one power electrical unit in at least one sub-network of interest.

The invention provides a method of building a control channel, a forwarding point (FP) and a controller. The method comprises that a first FP sends the topological information of the first FP to a second FP through a link layer discovery protocol (LLDP), so that the second FP can send the topological information of the first FP to the controller through a first control channel after the second FP receives the topological information of the first FP. The first FP receives first routing information sent by the controller that the first FP reaches the controller, and the first routing information is generated by the controller according to the topological information of the first FP. The first FP builds a second control channel with the controller according to the first routing information. The first FP does not need to run an interior gateway protocol (IGP), the fact that the first FP maintaining the neighbourship of the IGP is avoided, and the first FP does not need to store the routing information of other FPs reach a virtual cluster, the storage resource of the first FP is beneficial to be saved, and the forwarding performance of the first FP is beneficial to be improved.

A system computes link costs for a multi-hop wireless network. During operation, the system receives topological information for the multi-hop wireless network which includes a set of nodes, a set of links, and a success probability for a respective link. The system then obtains an average media access time for the multi-hop wireless network. The system also obtains a retransmission time for a respective node in the set of nodes. Next, the system computes a link metric value for a respective link based on the corresponding link success probability, the average media access time, and the corresponding retransmission time. The system then produces a link cost for the link based on the associated link metric value.

The invention discloses a block segmentation method for a triangular grid model. The method comprises the steps of reading the triangular grid model and establishing topological information; calculating a concave-convex signal of a vertex of the triangular grid model and performing global Laplace smooth denoising; calculating standardized concave-convex information to obtain a concave characteristic region of the grid model; calculating normalized concave-convex information and reducing the concave characteristic region; extracting a center line of the reduced concave characteristic region; constructing a closed segmentation line by adopting a sector probe ray algorithm; optimizing the segmentation line by adopting a three-dimensional snake method and performing fitting and smoothing on the segmentation line; and segmenting the triangular grid model by adopting a regional growth method. According to the method, the segmentation line meeting a minimum principle in the triangular grid model is extracted for efficiently and reliably segmenting the model into minimum rule sub-blocks meeting the visual requirements.

The invention provides a routing method capable of ensuring service QoS based on SDN, used for solving the technical problem that in the prior art, a network resource utilization rate is not high andthe routing method is poor in fault tolerance. The method comprises the implementation steps as follows: a SDN controller acquires topological information, link bandwidth information and link delay information of a network; the SDN controller acquires a standby path set via computation; the SDN controller acquires a network QoS evaluation parameter and a weight parameter; the SDN controller computes a weight factor of each path in the standby path set, and sorts the paths in the stand by path set in an ascending sort to acquire a target path set; the SDN controller acquires the optimal path from the target path set, and acquires the standby path set; and the SDN controller judges whether the optimal path is faulted, if yes, the secondary optimal path is selected from the standby path set to serve as the optimal path, and otherwise, a selected optimal path packaging flow table is distributed to an OpenFlow switch to forward data.